Charles t



(No Model.)

0. T. BLOOMER.

TELEPHONE.

N0. 493,907. Patented Mar. 21, 1893'.-

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UNITED STATES PATENT QFFIQE.

CHARLES T. BLOOMER, OF NEW YORK, N. Y.

TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 493,907, dated March21, 1893.

Application filed November 28, 1892. Serial No. 453,406. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES T. BLOOMER, a citizen of the United Statesof America, residing in the city, county, and State of New York, haveinvented certain new and useful Improvements in Telephones, of which thefollowing is a specification.

My invention is an improvement in telephones and consists of a device inwhich the transmitter is covered when not in use and is exposed when inuse and the movement of the parts to effect this operates ahook for thereceiver and brings it into position to hold the receiver when thetransmitter is covered and out of position so that the receiver cannotbe hung up when the transmitter is uncovered. And it further consists inoperating by this device certain switches hereinafter more fullydescribed. I prefer to perform these operations by running thetransmitter behind and out from behind acover as shown and describedherein. But it is obvious that the cover maybe moved instead of thetrans mitter and I wish to include this latter as an equivalent of theconstruction described in this specification and claims.

In the accompanying drawings which form a part of this specificationFigure 1 is a view in perspective of the telephone box wit-h the dooropen. Fig. 2 is a detail cross-section on the line 00 m of Fig. 1. Fig.3 is a detail crosssection on the line 22 of Fig. 1. In Figs. 2 and 3the binding posts shown at the top of Fig. 1 are omitted.

Referring to Fig. 1 the box B contains the magneto and other devicesusually contained in the signal box. The position of the magneto isindicated by the square marked in dotted lines. Upon the inside of thebox-lid L is the usual bell magnet M, and a conductin g strap S throughwhich one side of the bell is connected to one pole of the magneto. Theother side of the bell is connected in circuit when the door is closedthrough contact 0 and the binding post P. These parts are all of thefamiliar types.

The transmitter T is fixed upon the lower end of a rod R which may beslid vertically in guides G. This red when pushed up to the upper endsof the guides lies under two spring circuit closers O O. In order tomake sure that it shall pass easily under them the upper end of the rodis tapered off to an edge, as shown clearly in Figs. 2 and 3. Thecircuit closer C, is in the bell circuit, and is brought into contactwith a contact point which extends above it, when the rod is up. Thecontact 0 is in the transmitter circuit. Its contact point is placedbeneath it, and the two are in contact only when the rod R is pulleddown and out from under the spring circuit closer. the rod R at rightangles and nearly to the side of the box. Its outer end when the rod Ris pushed up engages with the inner end of the telephone receiver hookH, and brings the hook into position to hold the receiver. This hookcarries on itsinner end a weight W, and is supported in the box on apivot. When the rod R is drawn down carrying with it the arm A, thehook, unless held in place by the receiver, drops into the positionshown in the dotted lines in Fig. 1. The weighted end and pivot of thehook lie inside the box. The hook projects through a side of the box,and when in the position shown in full lines in Fig. 1 is outside of thebox and in place to hold the receiver, but when in the position shown indotted lines in Fig. 1 the end of the hook lies within the slit in theside of the box, and the receiver cannot be hung up until the hook isbrought into the full line position by pushing the rod R up.

On the lower edge of the box is attached a fender F,which projectsdownward far enough to cover the transmitter T when the rod R is pushedup. The transmitter may be pulled down from behind this screen, and needbe moved only a short distance to withdraw the rod R from under thespring circuit closers and thereby throw the circuits into position fororal communication. The rod carries adjustable friction springs whichpress against the guides, as shown at Y Fig. 3, so that the rod R in thetransmitter will remain wherever placed and therefore be adjustable tosuit the height of different operators.

It will appear from the foregoing that no one can use the transmitterwithout first drawing it down and thereby arranging the circuits fororal communication, nor afterward hang up the receiver without firstpushing the transmitter back under cover and at the same timere-establishing the condition of the A bent arm A projects from circuitsnecessary to bell signaling. If the transmitter contains a magnet, asfor instance When it is of substantially the same construction as thereceiver, care should be taken, in placing the magneto in the box, tohave its poles away from the transmitter.

While I have shown and described a sliding rod for positioning thetransmitter receiver-hook and circuit closers, I do no limit myself bythe shape of this part or the character of its motion.

'What I claim, and desire to secure by Letters Patent, is-

1. In a signal box a movable rod, in combination with a transmittersuitably supported, and a hook to support the receiver, and circuitcontacts, the transmitter, receiver, hook and contacts, all positionedby movements of the rod, substantially as described. 2. In a signal boxa movable rod with a transmitter suitably supported, a fender therefor,and a hook to support the receiver, and circuit contacts, all positionedby movements of the rod, substantially as described. Signed by me, inNew York city, this 26th day of November, 1892.

CHAS. T. BLOOMER. In presence of- THOMAS EWING, J r., NEAL EWING.

